Perhaps you should try some spelling variations:
hanh trinh » canh tranh
chua dong » cua dong, ha dong, huy dong
dong cong » duong cong, dung cong, dang cong
cac tinh » dac tinh, cuu tinh, ha tinh
cua tinh » cua sinh, va tinh, ha tinh
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((cac tinh) or (cua tinh)) - ((hanh trinh) or (hanh chinh)) chua dong cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((cac tinh) OR (cua tinh)) - ((hanh trinh) OR (hanh chinh)) chua dong cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: theo ((cac tinh) or (cua tinh)) - ((hanh trinh) or (hanh chinh)) chua dong cong dan van ban*.